:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #ecf0f1;
    --hover-color: #2980b9;
    --dropdown-bg: #34495e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    padding-top: 70px;
}

.universal-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--primary-color);
    color: var(--text-color);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 70px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 1.5rem;
}

.logo-icon {
    margin-right: 10px;
    font-size: 1.8rem;
}

.services-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
}

.nav-item {
    position: relative;
    margin: 0 5px;
}

.nav-link {
    display: flex;
    align-items: center;
    color: var(--text-color);
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-link:hover {
    background-color: var(--hover-color);
}

.nav-icon {
    margin-right: 8px;
    font-size: 1.2rem;
}

.active-service {
    background-color: var(--secondary-color);
}

.service-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--dropdown-bg);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    min-width: 200px;
    display: none;
    z-index: 1001;
}

.nav-item:hover .service-dropdown {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 12px 15px;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.3s;
}

.dropdown-item:hover {
    background-color: var(--hover-color);
}

.dropdown-icon {
    margin-right: 10px;
    width: 16px;
    text-align: center;
}

.user-section {
    display: flex;
    align-items: center;
}

.user-info {
    margin-right: 15px;
    text-align: right;
}

.user-name {
    font-weight: bold;
}

.user-role {
    font-size: 0.8rem;
    opacity: 0.8;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    cursor: pointer;
}

.content {
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.service-title {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color);
}

@media (max-width: 900px) {
    .nav-list {
        display: none;
    }
    
    .services-nav {
        position: relative;
    }
    
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: var(--text-color);
        font-size: 1.5rem;
        cursor: pointer;
    }
    
    .mobile-nav {
        position: absolute;
        top: 100%;
        right: 0;
        background-color: var(--dropdown-bg);
        width: 250px;
        border-radius: 4px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        display: none;
    }
    
    .mobile-nav.active {
        display: block;
    }
    
    .mobile-nav-item {
        display: block;
    }
    
    .mobile-nav-link {
        display: flex;
        align-items: center;
        padding: 12px 15px;
        color: var(--text-color);
        text-decoration: none;
        transition: background-color 0.3s;
    }
    
    .mobile-nav-link:hover {
        background-color: var(--hover-color);
    }
}

@media (min-width: 901px) {
    .mobile-menu-btn, .mobile-nav {
        display: none;
    }
}